Thursday, 2 July 2015

MATLAB code for DCT based Image Watermarking

The use of internet growing faster day to day and the need to display multimedia contents on the internet become necessary. Intellectual property right; documents are not fast information but property. YouTube, face  book, Torrents, pirate bay such other video, audio, image, documents resource websites are now became water  and food for youngsters across the globe so it is necessary to protect the rights of authors, so digital protection is  necessary and in-evitable.

Tuesday, 23 June 2015

MATLAB code for Combined DCT+DWT Image Watermarking.

The proliferation of digitized media due to the rapid growth of networked multimedia systems, has created an urgent need for copyright enforcement technologies that can protect copyright ownership of multimedia objects. Digital image watermarking is one such technology that has been developed to protect digital images from illegal manipulations. In particular, digital image watermarking algorithms which are based on the discrete wavelet transform have been widely recognized to be more prevalent than others.

MATLAB code of LSB based Video Steganography.

Video Steganography is an art and science of hiding images or text within the video file. The LSB approach is used along with the Masking Filtering and Transformations techniques to hide the secret image or any other files in video.

Data Hiding Algorithm:
Following diagram shows Data embedding algorithm in details.

 Fig: Embedding Algorithm